UPD750064A データシートの表示（PDF） - NEC => Renesas Technology

部品番号

コンポーネント説明

メーカー

UPD750064A

4 BIT SINGLE CHIP CMOS MICROCOMPUTERS

NEC => Renesas Technology 

µPD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)

6.5 Basic Interval Timer/Watchdog Timer

The basic interval timer/watchdog timer has the following functions.

(a) Interval timer operation to generate a reference time interrupt

(b) Watchdog timer operation to detect a runaway of program and reset the CPU

(c) Selects and counts the wait time when the standby mode is released

(d) Reads the contents of counting

Figure 6-4. Basic Interval Timer/Watchdog Timer Block Diagram

From clock

generator

fX/25

Clear

fX/27

fX/29

fX/212

MPX

Basic interval timer

(8-bit frequency divider)

BT

3

BTM3 BTM2 BTM1 BTM0 BTM

Wait release signal

when standby is

released

WDTM

SET1Note

4

8

1

Internal bus

Clear

BT

Set interrupt

request flag Vectored

interrupt

IRQBT request

signal

SET1Note

Internal reset

signal

Note Instruction execution

Data Sheet U10165EJ2V0DS00

27

Share Link: